function eingabe()
{

// keine Bestellung eingegeben:
 

if (document.forms[0].elements[0].value == '0' 
&& document.forms[0].elements[1].value == '0' 
&& document.forms[0].elements[2].value == '0'
&& document.forms[0].elements[3].value == '0'
&& document.forms[0].elements[4].value == '0'
&& document.forms[0].elements[5].value == '0'
&& document.forms[0].elements[6].value == '0'
&& document.forms[0].elements[7].value == '0'
&& document.forms[0].elements[8].value == '0'
&& document.forms[0].elements[9].value == '0'
&& document.forms[0].elements[10].value == '0') 

 
{
		alert('\nPlease fill in the number of CDs you want to order\!');
		document.forms[0].elements[0].focus();
		return false;
	}


// Anzahl enthält nichtnumerische Werte

if (document.forms[0].elements[0].value != '' )
{
 var chkZ = 1;
     for(i=0;i<document.forms[0].elements[0].value.length;++i)
       if(document.forms[0].elements[0].value.charAt(i) < "0"
       || document.forms[0].elements[0].value.charAt(i) > "9")
         chkZ = -1;
     if(chkZ == -1)
     {
       alert("Please enter a numeric value!");
       document.forms[0].elements[0].focus();
       return false;
      }
}
if (document.forms[0].elements[1].value != '' )
{
 var chkZ = 1;
     for(i=0;i<document.forms[0].elements[1].value.length;++i)
       if(document.forms[0].elements[1].value.charAt(i) < "0"
       || document.forms[0].elements[1].value.charAt(i) > "9")
         chkZ = -1;
     if(chkZ == -1)
     {
       alert("Please enter a numeric value!");
       document.forms[0].elements[1].focus();
       return false;
      }
}
if (document.forms[0].elements[2].value != '' )
{
 var chkZ = 1;
     for(i=0;i<document.forms[0].elements[2].value.length;++i)
       if(document.forms[0].elements[2].value.charAt(i) < "0"
       || document.forms[0].elements[2].value.charAt(i) > "9")
         chkZ = -1;
     if(chkZ == -1)
     {
       alert("Please enter a numeric value!");
       document.forms[0].elements[2].focus();
       return false;
      }
}

if (document.forms[0].elements[3].value != '' )
{
 var chkZ = 1;
     for(i=0;i<document.forms[0].elements[3].value.length;++i)
       if(document.forms[0].elements[3].value.charAt(i) < "0"
       || document.forms[0].elements[3].value.charAt(i) > "9")
         chkZ = -1;
     if(chkZ == -1)
     {
       alert("Please enter a numeric value!");
       document.forms[0].elements[3].focus();
       return false;
      }
}
if (document.forms[0].elements[4].value != '' )
{
 var chkZ = 1;
     for(i=0;i<document.forms[0].elements[4].value.length;++i)
       if(document.forms[0].elements[4].value.charAt(i) < "0"
       || document.forms[0].elements[4].value.charAt(i) > "9")
         chkZ = -1;
     if(chkZ == -1)
     {
       alert("Please enter a numeric value!");
       document.forms[0].elements[4].focus();
       return false;
      }
}
 
if (document.forms[0].elements[5].value != '' )
{
 var chkZ = 1;
     for(i=0;i<document.forms[0].elements[5].value.length;++i)
       if(document.forms[0].elements[5].value.charAt(i) < "0"
       || document.forms[0].elements[5].value.charAt(i) > "9")
         chkZ = -1;
     if(chkZ == -1)
     {
       alert("Please enter a numeric value!");
       document.forms[0].elements[5].focus();
       return false;
      }
}
if (document.forms[0].elements[6].value != '' )
{
 var chkZ = 1;
     for(i=0;i<document.forms[0].elements[6].value.length;++i)
       if(document.forms[0].elements[6].value.charAt(i) < "0"
       || document.forms[0].elements[6].value.charAt(i) > "9")
         chkZ = -1;
     if(chkZ == -1)
     {
       alert("Please enter a numeric value!");
       document.forms[0].elements[6].focus();
       return false;
      }
}
if (document.forms[0].elements[7].value != '' )
{
 var chkZ = 1;
     for(i=0;i<document.forms[0].elements[7].value.length;++i)
       if(document.forms[0].elements[7].value.charAt(i) < "0"
       || document.forms[0].elements[7].value.charAt(i) > "9")
         chkZ = -1;
     if(chkZ == -1)
     {
       alert("Please enter a numeric value!");
       document.forms[0].elements[7].focus();
       return false;
      }
}
if (document.forms[0].elements[8].value != '' )
{
 var chkZ = 1;
     for(i=0;i<document.forms[0].elements[8].value.length;++i)
       if(document.forms[0].elements[8].value.charAt(i) < "0"
       || document.forms[0].elements[8].value.charAt(i) > "9")
         chkZ = -1;
     if(chkZ == -1)
     {
       alert("Please enter a numeric value!");
       document.forms[0].elements[8].focus();
       return false;
      }
}
if (document.forms[0].elements[9].value != '' )
{
 var chkZ = 1;
     for(i=0;i<document.forms[0].elements[9].value.length;++i)
       if(document.forms[0].elements[9].value.charAt(i) < "0"
       || document.forms[0].elements[9].value.charAt(i) > "9")
         chkZ = -1;
     if(chkZ == -1)
     {
       alert("Please enter a numeric value!");
       document.forms[0].elements[9].focus();
       return false;
      }
}

if (document.forms[0].elements[10].value != '' )
{
 var chkZ = 1;
     for(i=0;i<document.forms[0].elements[10].value.length;++i)
       if(document.forms[0].elements[10].value.charAt(i) < "0"
       || document.forms[0].elements[10].value.charAt(i) > "9")
         chkZ = -1;
     if(chkZ == -1)
     {
       alert("Please enter a numeric value!");
       document.forms[0].elements[10].focus();
       return false;
      }
}


// Name fehlt

if (document.forms[0].elements[11].value == '' )
	{
		alert('\nPlease type in your name\!');
		document.forms[0].elements[11].focus();
		return false;
	}


// Strasse fehlt
if (document.forms[0].elements[14].value == '' )
	{
		alert('\nPlease type in the street\!');
		document.forms[0].elements[14].focus();
		return false;
	}

// Ort und PLZ eingetragen
if (document.forms[0].elements[15].value == '' )
	{
		alert('\nPlease type in Zip-Code\nand city\!');
		document.forms[0].elements[15].focus();
		return false;
	}


// richtige email-Adresse
if (document.forms[0]required-email.value != '' 
&& document.forms[0].required-email.value.indexOf('@') == '-1' 
|| document.forms[0].required-email.value.indexOf('.') == '-1'
&& document.forms[0].required-email.value != '' )
	{
		alert('\nPlease check the email-adress: \n\n\tabc@woher.com\n\n @ or . is missing\!');
		document.forms[0].required-email.select();
		document.forms[0].required-email.focus();
		return false;
	}

}